Monitoring
Item
Wet Deposition
Precipitation (pH, EC, SO42-, NO3-, Cl-, Na+, K+, Ca2+, Mg2+, NH4+, PO43-, Formic/Acetic acid)
Dry Deposition
Filter pack (SO2, HNO3, HCl, NH3, SO42-, NO3-, Cl-, NH4+, Na+, K+, Mg2+, Ca2+ )
Monitoring
Instrument
Rain sampler
Tisch Environmental TE-78-100APS
Filter Pack Sampler
NILU (4 Stages)
Note
Chiang Mai was renamed from Mae Hia in 2004. In 2016, Chiang Mai site was divided into three sites: Mae Hia, Chiang Phueak, and Si Phum. SO2 results by FP were recalculated accordingly.